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International Finance Discussion Papers
The International Finance Discussion Papers logo links to the International Finance Discussion Papers home page Cointegration, Seasonality, Encompassing, and the Demand for Money in the United Kingdom
Neil R. Ericsson, David F. Hendry, and Hong-Anh Tran
1993-457  (October 1993)

Abstract:  Virtually all previous narrow money demand studies for the United Kingdom have used seasonally adjusted data for money, prices, and expenditure. This paper develops a constant, data-coherent M1 demand equation for the United Kingdom with seasonally unadjusted data. For that model, we address issues of cointegration, error correction, general­to-specific modeling, dynamic specification, model evaluation and testing, parameter constancy, and exogeneity. We also establish theoretical and empirical relationships between seasonally adjusted and unadjusted data, and so between models using those data. Finally, we derive and implement encompassing tests for comparing models using adjusted data with models using unadjusted data. Unlike the "standard" encompassing framework, variance dominance is not always a necessary condition for encompassing.

Full paper(770 KB PDF)

Keywords
Cointegration, conditional models, dynamic specification, encompassing, error correction models, exogeneity, general-to-specific modeling, model evaluation, money demand, parameter constancy, sequential reduction, testing, United Kingdom

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